Association of Frailty with Sleep Quality and TCM-based Constitution among Elderly People 
CUI Guanghui,LI Shaojie,YIN Yongtian,CHEN Lijun,LIU Xinyao,YU Peilin
Chinese General Practice . 2021, (9): 1082 -1087 .  DOI: 10.12114/j.issn.1007-9572.2020.00.620